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Multiscale patterns in the diversity and ...
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Document type :
Article dans une revue scientifique
DOI :
10.1016/j.seares.2014.02.014
Title :
Multiscale patterns in the diversity and organization of benthic intertidal fauna among French Atlantic estuaries
Author(s) :
Blanchet, Hugues [Auteur]
UMR 5805 Environnements et Paléoenvironnements Océaniques et Continentaux [EPOC]
Gouillieux, Benoit [Auteur]
UMR 5805 Environnements et Paléoenvironnements Océaniques et Continentaux [EPOC]
Alizier, S. [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Amouroux, J.M. [Auteur]
Laboratoire d'océanographie biologique de Banyuls [LOBB]
Bachelet, G. [Auteur]
UMR 5805 Environnements et Paléoenvironnements Océaniques et Continentaux [EPOC]
Barillé, A.L. [Auteur]
Dauvin, Jean-Claude [Auteur]
Morphodynamique Continentale et Côtière [M2C]
de Montaudouin, X. [Auteur]
UMR 5805 Environnements et Paléoenvironnements Océaniques et Continentaux [EPOC]
Derolez, V. [Auteur]
Laboratoire Environnement Ressources Languedoc Roussillon [LERLR]
Desroy, N. [Auteur]
Laboratoire Environnement Ressource Bretagne Nord [LERBN]
Grall, J. [Auteur]
Université de Brest [UBO]
Grémare, A. [Auteur]
UMR 5805 Environnements et Paléoenvironnements Océaniques et Continentaux [EPOC]
Hacquebart, P. [Auteur]
Groupe d'Etude des Milieux Estuariens et Littoraux de Normandie [GEMEL-Normandie]
Jourde, J. [Auteur]
Université de Brest [UBO]
Labrune, C. [Auteur]
Laboratoire d'océanographie biologique de Banyuls [LOBB]
Lavesque, N. [Auteur]
UMR 5805 Environnements et Paléoenvironnements Océaniques et Continentaux [EPOC]
Meirland, A. [Auteur]
Nebout, T. [Auteur]
Laboratoire Environnement Ressource Bretagne Nord [LERBN]
Olivier, F. [Auteur]
UMR 5805 Environnements et Paléoenvironnements Océaniques et Continentaux [EPOC]
Pelaprat, C. [Auteur]
Station de Recherche Océanographiques et sous-marines [STARESO ]
Ruellet, T. [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Sauriau, Pierre-Guy [Auteur]
LIttoral ENvironnement et Sociétés [LIENSs]
Thorin, S. [Auteur]
Journal title :
Journal of Sea Research (JSR)
Pages :
95-110
Publisher :
Elsevier
Publication date :
2014
ISSN :
1385-1101
English keyword(s) :
Estuaries Macrozoobenthos Diversity Structuring Factors WFD
HAL domain(s) :
Planète et Univers [physics]/Interfaces continentales, environnement
Sciences de l'environnement/Milieux et Changements globaux
English abstract : [en]
Based on a parallel sampling conducted during autumn 2008, a comparative study of the intertidal benthic macrofauna among 10 estuarine systems located along the Channel and Atlantic coasts of France was performed in order ...
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Based on a parallel sampling conducted during autumn 2008, a comparative study of the intertidal benthic macrofauna among 10 estuarine systems located along the Channel and Atlantic coasts of France was performed in order to assess the level of fauna similarity among these sites and to identify possible environmental factors involved in the observed pattern at both large (among sites) and smaller (benthic assemblages) scales. More precisely this study focused on unraveling the observed pattern of intertidal benthic fauna composition and diversity observed at among-site scale by exploring both biotic and abiotic factors acting at the among- and within-site scales. Results showed a limited level of similarity at the among-site level in terms of intertidal benthic fauna composition and diversity. The observed pattern did not fit with existing transitional water classification methods based on fish or benthic assemblages developed in the frame of the EuropeanWater Framework Directive (WFD). More particularly, the coastal plain estuaries displayed higher among-site similarity compared to ria systems. These coastal plain estuaries were characterized by higher influence of river discharge, lower communication with the ocean and high suspended particulate matter levels. On the other hand, the ria-type systems were more dissimilar and different from the coastal plain estuaries. The level of similarity among estuaries was mainly linked to the relative extent of the intertidal "Scrobicularia plana-Cerastoderma edule" and "Tellina tenuis" or "Venus" communities as a possible consequence of salinity regime, suspended matter concentrations and fine particles supply with consequences on the trophic functioning, structure and organization of benthic fauna. Despite biogeographical patterns, the results also suggest that, in the context of the WFD, these estuaries should only be compared on the basis of the most common intertidal habitat occurring throughout all estuarine systems and that the EUNIS biotope classification might be used for this purpose. In addition, an original inverse relation between γ-diversity and area was shown; however, its relevance might be questioned.Show less >
Language :
Anglais
Peer reviewed article :
Oui
Audience :
Internationale
Popular science :
Non
Collections :
  • Laboratoire d'Océanologie et de Géosciences (LOG) - UMR 8187
Source :
Harvested from HAL
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